Ball in a box

BallInBox.lua

-- Use this function to perform your initial setup
function setup()

	displayMode(FULLSCREEN)
	boxheight =3D 50
	boxwidth =3D 50
	ballX =3D 400
	ballY =3D 400
	ballZ =3D 74
    updown =3D -4
    leftright =3D -4
    frontback =3D 4
    offset =3D 75
    diameter =3D 20
 --   sc =3D 1
    rot =3D 0
end

-- This function gets called once every frame
function draw()
    -- This sets a dark background color 
    background(46, 46, 186, 255)
    orientation()

    -- This sets the line thickness
    stroke(64, 43, 75, 255)
    strokeWidth(5)

    -- Do your drawing here
    for loop =3D 0, boxeshigh do
        endX =3D startX + barwidth
        endY =3D startY + loop*boxheight
        line(startX, endY, endX, endY)
    end
        line(startX-50, startY-50, endX+50, startY-50)
    line(startX-100, startY-100, endX+100, startY-100)
    line(startX-150, startY-150, endX+150, startY-150)
    boxadjd =3D ((barwidth + 300)/boxeswide)
    for loop =3D 0, boxeswide do
        newX =3D startX + loop*boxwidth
        lowerX =3D startX + loop*boxadjd - 150
        endY =3D startY + barheight
        line(newX, startY, newX, endY)
        line(newX, startY, lowerX, startY-150 )
    end
    endY =3D startY
    endX =3D startX + barwidth
    motion()
    strokeWidth(2)
    stroke(113, 62, 67, 255)
    fill(231, 10, 10, 255)
    ellipse(ballX,ballY,200,200)
    for loop =3D 1, 10 do
        lp =3D 11-loop
        ewidth =3D lp*(30-lp)
        ellipse(ballX,ballY,ewidth,200)
    end
    strokeWidth(2)
    noFill()
    for loop =3D 1, 10 do
        lp =3D 11-loop
        ewidth =3D lp*(30-lp)
        ellipse(ballX,ballY,200,ewidth)
    end
    strokeWidth(4)
end

function orientation()
    if WIDTH > 1000 then
        startX =3D 162
        startY =3D 268
        barwidth =3D WIDTH - 2*162
        barheight =3D HEIGHT - 368
    else
        startX =3D 134
        startY =3D 324
        barwidth =3D WIDTH - 2*134
        barheight =3D HEIGHT - 474
    end
    boxeshigh =3D barheight/boxheight
    boxeswide =3D barwidth/boxwidth  
end

function motion()
    rot =3D rot + 1
    if rot > 90 then rot =3D 0 end
    if WIDTH < 1000 then
        if ballY > 750 + ballZ then
            sound(SOUND_HIT, 1234)
            updown =3D -4      =
  
        elseif ballY < 450 - ballZ then
            sound(SOUND_HIT, 1234)
            updown =3D 4
        end
        if ballX > 520 + ballZ then
            sound(SOUND_HIT, 1234)
            leftright =3D -4
        elseif ballX < 220 - ballZ then
            sound(SOUND_HIT, 1234) 
            leftright =3D 4
        end 
        if ballZ > 150 then
            sound(SOUND_HIT, 1234)
            frontback =3D - 1
        elseif ballZ < 0 then
            sound(SOUND_HIT, 1234)
            frontback =3D 1
        end
    elseif WIDTH >1000 then
        if ballY > 520 + ballZ then
            sound(SOUND_HIT, 1234)
            updown =3D -4      =
  
        elseif ballY < 350 - ballZ then
            sound(SOUND_HIT, 1234)
            updown =3D 4
        end
        if ballX > 800 + ballZ then
            sound(SOUND_HIT, 1234)
            leftright =3D -4
        elseif ballX < 200 - ballZ then
            sound(SOUND_HIT, 1234) 
            leftright =3D 4
        end 
        if ballZ > 150 then
            sound(SOUND_HIT, 1234)
            frontback =3D - 1
        elseif ballZ < 0 then
            sound(SOUND_HIT, 1234)
            frontback =3D 1
        end      
    end 
    ballY =3D ballY + updown
    ballX =3D ballX + leftright
    ballZ =3D ballZ + frontback
end